Steady State Thermal Analysis of Heat Sinks having Different Types of Fins with Different Types of Perforation Using ANSYS

Mechanical Engineering

This paper introduces the way of heat extraction from heated sink by using different shapes of extended surfaces (fins) under natural convection. Finned heats sinks are used to cool power electronic Components. The shape which is used is of Hollow rectangular fin (HRF), Hollow circular fin (HCF), Hollow elliptical fin (HEF). They are provided with perforation of different shape such as rectangular, triangular, square, circular and elliptical. The heat sink i.e. base is of dimension (l×b×h) 70×60×10 mm and height of the fin is 70 mm. As per industrial demand there are numerous of research are going on to enhance the thermal transmission from the surface of the heat sink through fins and this is done by increasing the contact surface area. The Perforations on the hollow fins are done to achieve the maximum contact surface area. This results in improved rate of heat dissipation from the surface of the fin. All the fins are designed using SOLIDWORKS and the thermal properties are analyzed by using ANSYS R13 Workbench. The main aim of this research is to observe variation of thermal properties such as temperature distribution, total heat flux and direction heat flux over the different shapes of fins having different perforations. There are many materials which have good thermal conductivity such as copper, stainless steel and aluminum. As compare to aluminum, copper and stainless steel have better thermal conductivity but here aluminum is selected as fin material as it is lighter in weight as well as good thermal conductor.

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